What question did this study set out to answer?

To evaluate changes in left ventricular dimensions and cardiac mass in adolescent males following distinct endurance, sprint, and strength training regimens.

May 1, 1982Medicine & Science in Sports & Exercise

Left ventricular size following endurance, sprint, and strength training

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Why the study?

Do short-term endurance, sprint, or strength training regimens alter left ventricular dimensions in adolescent boys?

Population

28 adolescent boys

Comparison

Short-term training regimens vs Baseline (pre-training measurements)

Design

Cohort

Follow-up

short-term

Authors

GRGiuseppe RicciMontreal Heart Institute DLDaniel LajoieDrexel University RPRobert PetitclercPolytechnique Montréal

Discussion

Member takes

Implication

Short-term training does not alter LV dimensions in adolescent boys; leaves open whether longer regimens induce physiologic hypertrophy.

Key Points

To evaluate changes in left ventricular dimensions and cardiac mass in adolescent males following distinct endurance, sprint, and strength training regimens.
Assessed adolescent males undergoing three distinct training regimens: endurance (END, N = 8, mean age 16.8 yr), sprint (SPR, N = 8, mean age 16.3 yr), and strength (STR, N = 12, mean age 18.7 yr).
Measured resting heart rate, maximal oxygen uptake (VO2max), interventricular and left ventricular posterior wall thickness, internal diameter, and calculated left ventricular mass pre- and post-intervention.
VO2max increased significantly in the END group (3.71 ± 0.27 to 4.16 ± 0.57 L·min⁻¹, P < 0.05) and absolute VO2max increased in the SPR group (3.63 ± 0.63 to 3.98 ± 0.78 L·min⁻¹, P < 0.05), while STR improved upper body strength.
No significant modifications occurred in interventricular wall thickness, posterior wall thickness, or left ventricular internal diameter in any cohort.
Calculated left ventricular mass rose slightly by 10% in END and 4% in STR groups, attributed to training bradycardia (END resting heart rate decreased from 76 ± 8 to 64 ± 1 beats·min⁻¹) and enhanced diastolic filling time rather than structural hypertrophy.

Structured PICO

Do short-term endurance, sprint, or strength training regimens alter left ventricular dimensions in adolescent boys?

Population

28 adolescent boys (endurance group n=8, mean age 16.8 years; sprint group n=8, mean age 16.3 years; strength group n=12, mean age 18.7 years)

Intervention

Short-term training regimens (endurance, sprint, or strength training)

Comparator

Baseline (pre-training measurements)

Outcome

Left ventricular dimensions (interventricular and left ventricular posterior wall thickness, left ventricular internal diameter, and calculated left ventricular mass)surrogate

Short-term endurance, sprint, and strength training in adolescent boys significantly increases aerobic capacity and strength without causing true cardiac hypertrophy or significant modification of left ventricular dimensions.

Cite This Study

Ricci et al. (1982) studied this question.

synapsesocial.com/papers/6a7d0ac1e6f633beba6e45c8 https://doi.org/10.1249/00005768-198205000-00006

Topics

Echocardiography

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Left ventricular size following endurance, sprint, and strength training

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Left ventricular size following endurance, sprint, and strength training

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider